Home / Standards / GB/T 42513.9-2025 GB/T 42513.9-2025 Active Methods for chemical analysis of nickel alloys—Part 9 : Determination of total boron content—Curcumin molecular absorption spectrometric method 镍合金化学分析方法 第9部分:总硼含量的测定 姜黄素分光光度法 Standard Type GBT ICS 77.120.40 CCS H13 Status 现行 Issue Date 2025-08-29 Implementation 2026-03-01 Responsible Dept 中国有色金属工业协会 Drafting Unit N/A